This is the 15194th most frequent Russian word.
помрёт
"Will die."
The term 'помрёт' metaphorically applies to an inanimate object losing its functionality.
Батарея в телефоне скоро помрёт.
The phone battery will soon die.
The word 'помрёт' is used here to describe a future event of passing due to natural causes.
Он помрёт от старости через несколько лет.
He will die of old age in a few years.
Here, 'помрёт' expresses the consequence of neglecting care for a living thing.